/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
use cheetah_string::CheetahString;
use rocketmq_macros::RequestHeaderCodecV2;
use serde::Deserialize;
use serde::Serialize;

use crate::rpc::topic_request_header::TopicRequestHeader;

#[derive(Clone, Debug, Serialize, Deserialize, Default, RequestHeaderCodecV2)]
#[serde(rename_all = "camelCase")]
pub struct ConsumeMessageDirectlyResultRequestHeader {
    #[required]
    pub consumer_group: CheetahString,
    pub client_id: Option<CheetahString>,
    pub msg_id: Option<CheetahString>,
    pub broker_name: Option<CheetahString>,
    pub topic: Option<CheetahString>,
    pub topic_sys_flag: Option<i32>,
    pub group_sys_flag: Option<i32>,
    #[serde(flatten)]
    pub topic_request_header: Option<TopicRequestHeader>,
}

#[cfg(test)]
mod tests {
    use cheetah_string::CheetahString;

    use super::*;

    #[test]
    fn consume_message_directly_result_request_header_serializes_correctly() {
        let header = ConsumeMessageDirectlyResultRequestHeader {
            consumer_group: CheetahString::from_static_str("test_group"),
            client_id: Some(CheetahString::from_static_str("client_id")),
            msg_id: Some(CheetahString::from_static_str("msg_id")),
            broker_name: Some(CheetahString::from_static_str("broker_name")),
            topic: Some(CheetahString::from_static_str("topic")),
            topic_sys_flag: Some(1),
            group_sys_flag: Some(2),
            topic_request_header: None,
        };
        let serialized = serde_json::to_string(&header).unwrap();
        let expected = r#"{"consumerGroup":"test_group","clientId":"client_id","msgId":"msg_id","brokerName":"broker_name","topic":"topic","topicSysFlag":1,"groupSysFlag":2}"#;
        assert_eq!(serialized, expected);
    }

    #[test]
    fn consume_message_directly_result_request_header_deserializes_correctly() {
        let data = r#"{"consumerGroup":"test_group","clientId":"client_id","msgId":"msg_id","brokerName":"broker_name","topic":"topic","topicSysFlag":1,"groupSysFlag":2}"#;
        let header: ConsumeMessageDirectlyResultRequestHeader = serde_json::from_str(data).unwrap();
        assert_eq!(
            header.consumer_group,
            CheetahString::from_static_str("test_group")
        );
        assert_eq!(
            header.client_id.unwrap(),
            CheetahString::from_static_str("client_id")
        );
        assert_eq!(
            header.msg_id.unwrap(),
            CheetahString::from_static_str("msg_id")
        );
        assert_eq!(
            header.broker_name.unwrap(),
            CheetahString::from_static_str("broker_name")
        );
        assert_eq!(
            header.topic.unwrap(),
            CheetahString::from_static_str("topic")
        );
        assert_eq!(header.topic_sys_flag.unwrap(), 1);
        assert_eq!(header.group_sys_flag.unwrap(), 2);
    }

    #[test]
    fn consume_message_directly_result_request_header_handles_missing_optional_fields() {
        let data = r#"{"consumerGroup":"test_group"}"#;
        let header: ConsumeMessageDirectlyResultRequestHeader = serde_json::from_str(data).unwrap();
        assert_eq!(
            header.consumer_group,
            CheetahString::from_static_str("test_group")
        );
        assert!(header.client_id.is_none());
        assert!(header.msg_id.is_none());
        assert!(header.broker_name.is_none());
        assert!(header.topic.is_none());
        assert!(header.topic_sys_flag.is_none());
        assert!(header.group_sys_flag.is_none());
    }

    #[test]
    fn consume_message_directly_result_request_header_handles_invalid_data() {
        let data = r#"{"consumerGroup":12345}"#;
        let result: Result<ConsumeMessageDirectlyResultRequestHeader, _> =
            serde_json::from_str(data);
        assert!(result.is_err());
    }
}
